manual wlan0
iface wlan0 inet dhcp
    pre-up devmem 0x100C0080 32 0x530
    pre-up echo 7 > /sys/class/gpio/export
    pre-up echo out > /sys/class/gpio/gpio7/direction
    pre-up echo 0 > /sys/class/gpio/gpio7/value
    pre-up modprobe mt7601u
    pre-up wpa_passphrase $(fw_printenv -n wifissid || echo openipc) $(fw_printenv -n wifipass || echo openipc12345) >/tmp/wpa_supplicant.conf
    pre-up sed -i '2i \\tscan_ssid=1' /tmp/wpa_supplicant.conf
    pre-up sleep 3
    pre-up wpa_supplicant -B -D nl80211 -i wlan0 -c/tmp/wpa_supplicant.conf
    post-down killall -q wpa_supplicant
    post-down echo 1 > /sys/class/gpio/gpio7/value
    post-down echo 7 > /sys/class/gpio/unexport